Fixed account creation bugs since last small refactoring

Nodes now remember there currency
Community creation depends on node creation

Fix accept button in contact dialog not enabled when adding from context menu

 Open a messagebox for better alerting user

add about menu to open the about popup window

Show members in table with columns for pubkey, uid, join date and expiration
Display members who will expire in 15 days as red

- Managing lost communities (when no nodes could be joined)
- Fixing broadcast management